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Magazine Problem 45
Write the number in scientific notation. the number $$ 0.0085 $$
Problem 51
Rewrite the expression with positive exponents. $$ x^{-5} $$
Problem 52
Simplify the expression. \((3 b)^{3} \cdot b\)
Problem 53
Rewrite the expression with positive exponents. $$ x^{-2} y^{4} $$
Problem 54
A store is having a sale on sweaters. On the first day the price of the sweaters is reduced by 20%. The price will be reduced another 20% each day until the sweaters are sold. On the fifth day of the sale will the sweaters be free? Explain.
Problem 54
Rewrite the expression with positive exponents. $$ 8 x^{-1} y^{-6} $$
Problem 55
Write the expression as a single power of the base. (Lesson 8.1) $$3^{5} \cdot 3^{2}$$
Problem 56
Use a calculator to perform the indicated operation. Write the result in scientific notation and in decimal form. $$ 6,000,000 \cdot 324,000 $$
Problem 58
Write the expression as a single power of the base. (Lesson 8.1) $$a^{9} \cdot a^{4}$$
Problem 60
Write the fraction in simplest form. (Skills Review p. 763) $$\frac{215}{645}$$
